The environmentalist and founder of Virgin America airlines has installed “hydration stations” at San Francisco International Airport.

Assuming you’re lucky enough to be a passenger boarding through SFO’s “green” terminal, you can now bypass the overpriced water at the gift shops and fill up your own reusable bottles. You can even buy a Virgin America-branded bottle if you forgot to bring one from home.

Virgin’s water station isn’t the first at SFO, but it is the first with a major sponsor — and the airline’s customers are singing its praises on the company’s Facebook page.